If an athlete’s gender is called into question he/she would be sent to these centers for evaluation and, if necessary, treatment such as surgery or hormone therapy.

The committee also wants sports officials to implement rules on a “case by case” basis when a competitor’s gender is ambiguous. Committee delegates said, “pre-participation health examinations” could be beneficial as well.

Ralph Lauren Unveils Team USA's Opening Ceremony Look

The move comes after South African runner Caster Semenya was ordered to undergo gender testing after winning the women’s 800 meters in August. Semenya has not yet been cleared to compete again because the runner’s test results are still pending.

Prior to 1999 the IOC used chromosome testing to determine gender. However, this procedure was dropped after being deemed “unscientific and unethical,” according to the Associated Press.